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Michio Kaku

Sophie Elwin Harris

Time: Episode 3: Earth Time

Episode 3

Episode 3: Earth Time

Earth Time

BBC Four - Time, Earth Time

This edition looks at the planet's time, asking where we came from and where we are going.

Series in which Michio Kaku goes on an extraordinary exploration of the world in search of time. This edition asks where we came from and where we are going.

How much time can you imagine? A hundred years? A thousand? Even a million? Just how far does time stretch back? And where do we fit in? These are the questions Michio Kaku asks in this episode of his series about the nature of time.

From the calculations of a 17th-century Irish bishop to the secrets of meteorites, Michio finds out how vast Earth time really is. It is a journey that takes him to the Grand Canyon, the Arizona Meteor Crater and the most active volcano in the world in Hawaii. 

Things we see as constant are really changing through time - our planet, life, and even us. These time spans reveal just how insignificant and transient we are. But Michio looks to our own journey to suggest that there might be hope for future of humanity after all.

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String theory pioneer Michio Kaku goes on an exploration of the world in search of time

String theory pioneer Michio Kaku goes on an extraordinary exploration of the world in search of time

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Episode 3: Earth Time

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